Carburetor



Jan. 1, 1929. 1,697,816.

G.HElNlSH CARBURETOR Filed Aug. 5, 1925 2 Sheets-Sheet 1 ATTORNEY.

' INVENTOR.

620w: 1445mm.

Jan. 1, 1929.

1,697,816 G. HElNlSH CARBURETOR Filed Aug. 5, 1925 2 Sheets-Sheet 2 ""1WW v INVENTOR, 650/965 A fi/Y/S/r.

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ATTORNEY.

den. 1, 1929.

teams UNETEZE STATES EDATENT OFFEQE.

GEORGE HEINISH, -OE AKRON, OHIO, ASSIGNOR TO THE STAR DRILLING MACHINECOM- PANY, OF AKRON, OHIO, A. CORPORATION OF OHIO.

CAEBURETOR.

Application filed August 5,

This invention relates to carburetors for internal combustion engines.

The chief object of the invention is to provide a combined gasoline andgas carburetor of simple, inexpensive but highly eifective construction,wherein the throttle and choke used for controlling the supply ofgasoline and air mixture to the engine may be also employed forcontrolling the supply of gas and air mixture to the engine.

Another object is to provide an attachment- Figure 1 is a side elevationof an internal combustion engine provided with the carburetor of theinvention and having the gas supplying system connected thereto;

Figure 2 is a side elevation of the carburetor; and

Figure 3 is a section on line 3-3 of Figure 2 through the gas-supplyingattachment. Referring to the drawings, 10 indicates generally anysuitable form of internal combustion engine mounted on any suitablesupport such as timbers 11, 11 forming part of the framework of amachine, such as an oil well drilling or other machine, to be operatedor driven by the power unit. Unit 10 has connected thereto in the usualmanner, a carburetor 12 which may be of a standard type provided with anattachment whereby the objects of the invention are obtained or whichmay be originally constructed so as to embody the features of theinvention.

As best illustrated in Figure 2, the carburetor 12 is preferably of thatstandard type in which the air choke valve body 13 is a separate piecearranged to be detachably connected onto the body portion 12 of thecarburetor by screws (not shown) extending through mating apertured lugsindicated at 14:, and 14 respectively on the carburetor proper and thevalve body 13. This form of carburetor permits of the ready insertion1925. Serial m. 48,279.

of a gas valve body 15 between the carburetor proper and the air chokevalve body 13, the body 15 having apertured lugs 16, 16 therein adaptedto mate with lugs 14 and 14 so that the valve body 13 and carburetor 12can be secured together by screws 16 16 with the gas supply valve body15 interposed therebetween. I I

Supply of gasoline to carburetor 12 is effectedin the usual manner froma tank (not shown) through a lead line 17 which has therein a valve 18arranged adjacent engine 10 to cut oil the supply of gasoline when gasis to he used for fuel. The usual engine throttle on the carburetor isindicated at 19 and the throttle control lever at 20.

Supply of air to the carburetor is effected by suction through an aircleanser 21 attached onto valve body 18, and is controlled by a chokevalve 22 operable by a control lever 23 to which is connected the usualcontrol wire 24.

It will appear from the foregoing that in the specific constructionillustrated, the gas supply attachment 15 is arranged between the enginethrottle 19 and the choke valve 22. In carrying out the invention withother forms of carburetors having an integral carburetor and air chokevalve body, it may be necessary to supply the equivalent of choke valve22 with the attachment 15.

The supply of gas to the carburetor 12 is effected through a needlevalve 25 ad justableby means of a screw 26 threaded through valve body15 and adapted to be retained in adjusted positions by means of aspringlatch 27 engaging aknurled operating head 28 on screw 26. Valve 25extends across a bore 29 through valve body 15 into one end of which isthreaded a sealing plug 30, and to the other end of which is connected agas supply line 31.

Supply line 81 is connect-ed through a valve 32 with a supply tank orreservoir 33 mounted on'frame 11 and having a low pressure gauge 33thereon. Supply of gas at low pressure to tank 33 is effected through asupply line 34 leading to any suitable source (not shown) of natural orartificial gas and having a low pressure regulator 35 therein. 7

The provision of the foregoing system for supplying gas under loWpressure to the carburetor is desirable for the reason that a rapidlyflowing gas cannot be properly ill) quired flow of air to thoroughly mixthe gas and air in the carburetor.

In use, the same throttle 19 and the same choke 22 are employed Whetherthe fuel is gasoline or gas. If the former, valve 18 opened, valve 32 isclosed, and under normal condition, except when starting, choke 22 willbe open to its fullest extent, If gas is, to be used, valve 18 isclosed; and valve 32 is opened, and valve 25. is adjusted until thedesired flow of is ohtainec, cholge 22 being partly closed to increasethe velocity of airto'thatat'which the gas suppli d o obta n h prop rxture- It will appear from the foregoing that a simple but 'eflectivecombined. gasoline and as carburetor has been provided. It Will a soappe that a simple attachment has been devised for adapting standardgasoline c 'huretors for use also With natural or ar tifici'al gas, and,in addition, an improved system for supplying natural gas to acarburetor has been developed.

Modifications of the inven on b resorted to Without departing from thespirit of the invention or the scope of the appended claim.

What I claim is:

In combination With a liquid fuel carburetor liavinga choke valve body(ietachably secured thereon, of a gaseous fuel supplying attachmentadapted to be interposed be tween the body portion of said carburetorand aid choke valve body, said attachment having a valve for controllingthe flow of gaseous fuel to the carburetor, whereby said carburetor isadapted for supplying a proper mixture of either liquid oi gaseous fuelwith air to an internal combustion engine, the choke valve controllingthe admispon of air independently of the adinimion o t e ga ous fu lGEORGE HEINIS'H,

